Rockwell Automation 1756-xxxx ControlLogix Chassis and Power Supplies Installation Instructions - Manual (Page 31)

Rockwell Automation Publication 1756-IN005C-EN-P - March 2014 31
Chapter
2
Install Chassis and Redundant Power Supplies
This chapter describes how to install standard and ControlLogix-XT versions of
the 1756 chassis with redundant power supplies.
Redundant Power Supplies The redundant power supply system provides additional uptime protection for
chassis used in critical applications. The two remotely-mounted supplies are
designed to share the current required by the chassis and are available in AC
(catalog number 1756-PA75R/A or 1756-PAXTR) and DC (catalog number
1756-PB75R/A or 1756-PBXTR) versions that can be mixed or matched when
used in tandem.
In the event of a failure by one power supply, the remaining supply accommodates
the entire load of the chassis without disruption to chassis activity.
The 1756-PSCA2 chassis adapter is a passive device designed to funnel power
from one or two ControlLogix redundant power supplies to the single power
connector on the ControlLogix chassis (only Series B) backplane.